Transmission



Aug. 28, 1928.

A. -TAUB TRANSMISSION File-d Jyne 5, 1925 AINVENTOR.v VM. mi

A TTORNEY.

Patented Aug. 28, 1928.

UNITED STATE ALEX 'ramal or DETROIT, iarcnremiv.v

TRANSMISSION.

`Application led June 5,

The resent invention relatesI to power transmi ting mechanismparticularly for toy vehicles such as are adapted to be, propelled by the occupant through the actuation of pedals. Among the objects of the, invention is the production of a simple, cheap and eiiicient devicev which may be, easily and economically made and assembled, and which Will not easily get out of order.

Another object 1s a tioned having change speed means.

With these and other objects in vien7 as will readily appear upon reference to the followirig description, the invention consists in the means and mechanism illustrated in the accompanying drawing and in such modifica. tions and variations thereof as will come within the 4scope ofthe claims hereunto appended.

In the drawing; Fig. 1 is a horizontal section through the mechanism. Y

Fig. 2 is a vertical section on the line 2-2 of Fig. 1.

As indicated, apreferred embodiment ofV the invention consists in a power transmission for example, for a toy automobile, the drive mechanism being shown as mounted upon a fra-me Work of which 1() indicates one of the side frame members havin a bearing 11 for a, liverear axle 12 t0 Whit? `is iixed Wheel V13,

The frontend of member 1() is secured to cross member 14" of the frame and the front axle" (not shown) may be secured Vin a convenient manner toV this member. y i

Extending long g'itudi'nallyr and located cen? trallv of the frame is a sub-frame having two side 9members 20 and 2 1 which extend from cross member 14g to beyond the rear axle 12, of these, the member 21 has; its rearward end extended. vertically of the assembly and formed. into a cup shaped portion 22 serving as a gear case, being providedcentrally of the cup with abearing 2.3 fer axle. 12. The member 20 is also widened at its rea-r end and serves as a cover' 24 for the gear case, andv is provided wit-h axle bearing 25.

Within the case, thus formed. and keyed to axle 12 is a combination compound face gear and brake ,drum 3() consisting ot a drum member 31, preferably radially ribbed as at 32, having secured to its outer web face a plura1 dev-ice of the kind men- 1926. Serial No. 113,919.

ity of toothel fines 33em- 34. of these ring 33- will preferably consist of un. annular sheet metal channel having gear teetlzi cut in its flanges. Rino'33 is pre erably 'made bv stamping outa Eat ring having teeth on its 1nner and outer peripheries and thenv die forming to the shape indicated in the drawin g. Of course, in cutting the ring, alloWafnce will be made for the deformation produced in the die forming. l V u rlhe ring 34,`in the design illustrated, will be similar to ring 33, except that, it` Will have only one row of teeth. f f, Ring 33 will be secured, as by rivetting, to the outer edge ot" the drum web and ring 34 Will be secured in a similar manner near the center and preferably to a flanged hubV `3,5 also securedto the Weband serving to furnish means for keying theA drum and .geiueto` ythe axle 12. n l Within the gear case `and, secured to 4the cover portion 24jis a U-shaped piece 36 provlded with f1 paseas'ein its Central, `art-ier, :forY axle 12 and also with a bearing 3, "in 011 of its less fer the. end.' 0f d'ivey Shaft 4G., This, Shaft 40 extends from. Desir aXle 1,2 te. near' the Vfront of the -subfiame 20+.21` and is driven by suitable means to be described later.

Upon the rear port-ion of sli-aft V4f() are mountedloosely gears 41, 4,2, and 43, each having Welded thereto flanged sleeves 44 there beine two of these for. each gear ferm-Y i'ng a spacing hub therefor. Gears41, 42fand`V 43 are' prevented from moving ferivardL en shaft 40`by means of acallar 45. These three A gears arev so spaced as, towbe in constant mesh with the eorrespending" teet-hlcn rings and 34, and eachis prcvid'ed with a slate@ on its inner peripheryl Shaft 4() is also slctted longitudinally aS. et; 47. and in this slot? lies .a spring 48 secured at one end to. aeollarAQ., slidable on shaft 40. The other end ofv spring 48is bent upwardly aseliown in Figi. and is adapted t0. pressV (inwardly inte elle. ef; the Slots 4,6 in (me et the.y gears. 1.42am 43,. thereby keying vthe ,partieular gear te, the Shaft. `Cellar t3/s groovedexternalllv et 50` and in this-areeveliesa- Shifter fark. 5.1' carried. b. red 52 extending feltivak te@ suitably located hand or foot lever (not shown). When the collar 49 is moved it will carry with it the spring 48 and pick up one of the gears 41, 42, and 43, 'depending of course les on its position. The drawing shows the spring to be engaged in the slot of gear al. As the three gears on the shaft are of the same size and the gears on rings 33 and Se different sizes, this means ofliers several driving speeds for the vehicle.

The front end of shaft 4t) carries a gear 6() xed to it for example b y pins a short distance from the end, and the shaft 40 has a bearing in a second U-shaped piece G1 similar to member 36. Piece G1 is secured to subrame member 2l and through it passes a shaft 62 to the ends of which are secured pedals (i3. Keyed to shaft G2 is a hub piece Get, similar to hub 35. to which is secured a formed sheet metal ring gear (35. similar to ring 3st. Gear G5 meshes with gear (it) and serves to transmit torque from the pedals to shaft 40 and therefore to the shaft 12.

The brake drum 31 will be provided with a. suitable brake band anchored to the trame as at 71 and actuated in suitable fashion through a hand or foot lever.

It will be noted that gears 4.41. 42, L13. and GO are identical in form and size and each is made up of the stamped gear and .sleeve hub members. It will also be noted that the ring gears 3i and G5 are identical as are the two hub members 35 and 64 and the two U-.shaped members 36 and 61.

This duplication and consequent interchangeability makes for cheaper and simpler manufacture and assembly ot' the device and is a decided advantage over known structures.

In addition to this simplification the structure' as used in a toy vehicle furnishes an over-drive ratio. a normal drive ratio and an under-drive ratio, thus permitting the vehicle to be operated by a small child on the under-drive ratio or to be operated normally or at high speed on the other two ratios. For example, witha gear ratio at the pedal ot 1% 1 and 1:8 at the rear axle, the drive is 1 l/H for slow speed. lilith the same ratio at the pedals and 1:11/2 at the axle the drive is 1:1 or normal. lith the same ratio at the pedals and 1: 1 at the axle the drive is 1% to 1 or high speed ratio. i

Having now described the invention and the preferred form of embodiment thereof, it should be noted that the said invention is not to be limited to the specific details herein set forth but only by the scope of the claims which follow.

1. Driving mechanism for a toy vehicle consisting of a pedal driven lateral shaft. a longitudinal shaft, a face gear fixed on said Alateral shaft meshing with a spur gear fixed to the longitudinal shaft, a plurality of other spur gears identical with the first mentioned one and loosely mounted on said longitudinal shaft. a driving axle tor the vehicle. a compound facc gear meshing with said plurality of spur gears and secured to said driving axle, and means for fixing at will to said .longitudinal shaft a selected one of said plurality of spur gears.

2. In speed selecting mechanism tor toy vehicles, a compound face gear secured to a driving axle for the vehicle. a drive shaft parallel to the face of said gear and havingr a plurality ot drive pinions loosely mounted thereon, each pinion having an internal slot. a longitudinal slot in said drive .shalt and extending through said pinions, a slidable eollar on said shaft and a spring linger secured to said collar and lying in said longitudinal slot, said finger having a bent portion at its free end adapted to spring out into one. of the pinion slots and thereby fix said pinion to said shaft in driving relation.

3. Drive mechanism for a toy vehicle having a driving axle, said mechanism including a sub-frame secured to the body frame. a laterally extending .shaft carrying pedals at its extremities supported in said sub-trame. a ring gear fixed on said shaft. a U-shaped member fixed to one side ot the sub-'frame and fupported on said shaft, a longitudinalv extending drive L'haft provided with a bearing in said U-shaped mcmbe.' and having fixed thereon a pinion meshing with said ring gear, a second U-sbaped member like the first fixed to the sub-'trame and supported at its other end on the driving axle for the vehicle. said second member providing a bearing for the other end of the drive shaft. a ring gear fixed on said axle. and a pinion on said drive shaft meshing with the latter ring gear.

Il. Drive mechanism for a toy vehicle having a. driving axle, said mechanism including.r a sub-frame secured to the body trame. a laterally extending shaft carrying pedals at its extremities supported in said sub-iframe. a ring gear fixed on said shaft. a U-shaped member fixed to one side of the sub-:trame and supported on said shaft, a longitiulinally extending drive sha'f't provided with a laaringIr in said U-shaped member and having fixed thereon a pinion meshing with said ring gear. a second U-shaped member like the first fixed to the sub-frame and supported at its other end on the driving axle for the vehicle, said second member providing a bearing for the. other end of the drive shaft, a compound face gear fixed on said axle. a plurality of pinions loosely mounted on said drive shaft and meshing with said compound face gear. and means for selecting and fixing any one of said loose pinions to said drive shaft at will.

ALEX TAUB.

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